Electrical governor for steam-engines



(No Model.) V v 2 Sheets-Sheet 1.

E. H.- AMET.

ELECTRICAL GOVEENOE EOE STEAM ENGINES. No. 300,338. Patented Ju e 17,1884.

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(No Model.) 2 Sheets-Sheet 2.

E. E. AMET.

ELECTRICAL GOVERNOR EUR STEAM ENGINES.

vPatented 'June 17, r1884.

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miren .Freres VPermar @lirica EDVARD II. AMET, OF LA GRANGE, ILLINOIS.

ELECTRICAL GOVERNOR FOR STEAMMENGINES.

SPECIFICATION' forming part of Letters Patent 1\To.300,338, dated .Tune17, 1884:.

Application filed January 25, 1894. (No model.)

T tu whom it may concern:

Beit known that I, EDWARD H. AMnr, a citizen of the United States,residing at La Grange, in the county of Cook and State of Illinois, haveinvented certain newand useful Improvements in Electrical Governors forSteam-Engines, of which thefollowing is a full, clear, concise, andexact description, reference being had to the accompanying drawings,forming a part of this speciiication.

The object of my invention is the applica tion of an electric current toa steam-motor in such mannerand through such devices as shallautomatically control the supply of steam thereto, and thus regulate thespeed of the motor, so that its operation will be smooth and at alltimes in accordance with the labor it is performing, and so that changesin. the amount of labor required of the motor and the effects of suchchanges thereupon shall in themselves produce the desired action of theelectric current. Vth this object in'view I employ an electric solenoid,the' yieldinglysupported movable core of which is connected to anindependent motor, which controls the supply of steam to the main motor,somewhat in accordance with the principle of construction and operationset forth in my Letters Patent No. 292,397, granted January 22, 1884. Inthis instance I employ a secondary independently-supplied steam-motorfor regulating the supply of steam to the main or pri-y mary niotor,which latter, in this instance, is utilized to operate a dynamo fromwhich a current of electricity is derived, and conducted to the solenoidfor its operation; and my invention consists, broadly, in thisl combinedco-operative arrangement of the principal elements mentioned.

My invention also consists in certain features of construction, in theseparate devices employed, and in Atheir combination and cooperativearrangement, as hereinafter fully described, and specifically set forthin the claims. i

Referring to the drawings forming a part hereof, in which like lettersof reference indicate like parts in all the figures, Figure l is a sideelevation of a steam-motor provided with my improved electricalgovernor. Fig. 2 is an enlarged side elevation of the governor detached,and Fig. 3 is a similar elevation of a side adjacent to that shown inFig. 2.

A represents a steam-generator, which may be of any desired type; B, asteam-motor, also of any desired type, C, a dynamo, which is connectedby any suitable ineansMas a belt, C-to the main motor, so as to beoperated thereby to produce a current of electricity which is directedby the conductors O2 C3 to the solenoid D. B is any suitable supplypipevalve, preferably of that class known as balanced,77 and it may belocated at any point between the motor and the generator. In thisinstance it is secured to the steam- `chest, and the main supplypipe B2extends from the valve tothe generator, as shown, and may, if desired,be provided with an ordinary stop cock or valve, I3?.

As thus far described, it will be apparent that the speed ofthe motor I3may be varied, when the yalve B is open, by opening to a greater or lessextent the valve B, to vary the quantity of steam passing therethroughto the motor. This variation of supply is produced by raising andlowering the valve, and forthis purposeits stem Z) is screw-threaded atthat portion outside of the usual stuffing-box; and upon the exposedunthreaded portion of the stein there may be, as shown, a sleeve orguide, b, (see Fig. 2,) on a rod, b2, secured to any suitable xedsupport.

y A stand ard,B*, is formed on or may be secured to the top of thevalve; or it may be formed on or secured to any desired part of the motor, for the purpose of supporting the solenoid and the intermediatecooperative mechanism. To the standard is secured a bracket, b, forminga bearing for a nut, b, adapted to iit the thread of the valve-stein,and connected to or formed asa part of a bevel-gear, 11". The nut is somounted in the bracket that the rotation of the gear in one directioncauses the nut to raise the stein and valve, and, when rotated in anopposite direction, to lower the stem and valve, a collar, b, secured tothe nut below the bracket servi-ng to prevent its being raised out ofits bearing in the bracket. A bevel-gear, 1f, meshes with the gear b5,and is mounted on the shaft e of a steam-fan, E, which, in thisinstance, consists of a disk having radial vanes or blades e, andmounted,

IOO

`rigidly upon the shalt and incloscd in a case having in its peripheralor other shaped edge walls two oppositely-located ports, e c, and in itsouter sidewall an exhaust port and pipe, c". The case is secured to thestandard by lugs el: or it may he, if desired, `formed in one piece withsaid standard. Oppositely-lecated supply-pipes c eT connect the ports oc, rcspeetively, with similarly relatively located ports ci c in thewalls ol' a steam chest or valve, F, which in this` instance issupported by a bracket il'ormed thereon, and secured to the top o1" thestandard l". l1 desired, the steam chest or valve may be l'ormcdintegral with the case ol' ythe steaxnffan, and the ports 'ci c andpipes 1^ eT may be formed in or on the edge walls ol' the case by usingsuitable cores in casting the same, as is usual. in luidanoterconstruction. The inner ends ot' the ports c"y e are arranged indill'erent horizontal planes, so that the piston-head f, being of properlength or thickness, may close both ports when in the position shown, orclose one only el' said ports when elevated or depressed, as it may beby means ot' the connection ol' its piston or stem j" to a suitablelever, G, properly supported, and having an arm thereof connected to themovable core D of the solenoid. The valve l1l is provided withasupply-pipe, ll", connecting it with the steamgenerator A, or it may bewith the supply-pipe l, at a point intermediate the valve 5B and the`generator, or forming any other connect-ion, so as to provide a supplyof steam unaffected by the said valve ll. Now, it is apparent that il"the pistonj'bc elevated, so as to open the port` e and close the port csteam will opcrate the fan ll by entering the port ci and cause it torevolve from left to right, (see Fig. 0,) and by means of the bevel-gear1f If' the stem I) oi" valve l will be lowered, and thus the supply ofsteam to the main motor will be d i minished and its speed accordinglyreduced,whilc il' the pistonj' be depressed steam will be conducted tothe fan through the opposite ports w" e, and it will. be revolved in theopposite direction and cause the gear to rotate the nut so as to elevatethe stem I), and thus increase the supply ot' steam to the motor, andaccordingly the speed of the same. ln this instance the piston or stemmay be reduced in thickness at a point, j, between the valve and thelever G, so as to render it elastic and thus adapted to the curvilinearmovement ol' the end et" the lever, and said lever is pivoted to abracket, y, secured to the solenoid, while its longer arm is pivoted ina slot in the core, as shown, and extends beyond the same and made toreceive a threaded bolt provided with a nut, y, which maybe adjusted todetermine thelimits of the movements of the core in such manner that thepiston j' may be also confined in its movements, so as to perform thedesired functions. ,A coiled spring, g2, hears against a nut, y, onthcbolt and against the solenoid, so as to yieldingly support the coreagainst the tendency ol' :l current to d raw the same within thesolenoid. A

Binding-posts d rl are provided 'l'er srntable conductors, C* C, :l'orthe positive and negative ol' a current produced by the dynamo l', andas the strength of said current is depend` ent upon the rapidity of therotation of the dynamo, and. this :rapidity ol' rotation dependent nponthe rapidity olj the operation et the motor, it evidently follows thatwhen, by reason of an increased load upon the motor or a falling belowthe normal quantity of the supply ol.' steam to the same, the cere :israised by the spring against the new weakened current, the pistonf isdepressed, the port e closed, the port c" opened, and steam from thepipe F .is conducted to the l'an through the port c, cans ing it, as anintermediate independent motor, to revolve the gears if b, so as toraise thc stem Z ol the valve l and thus increase the supply ol' steaml'roin the generator through the supplypipe 132 to the main motor insullicient quantity and l'or a snllicient time until the retarding causeis overcome; and when, by reason olf an opposite cause or eonlbimltionot' causes, the rapidity ot' the operation ol' the main motor isincreased beyond anormalrate, as by a diminished load, the dynamo likewise affected, and produces a current ol" increased strength7 withdrawsthe core within the solenoid against the nor1nally-:uljusted spring andlever, and through Athe described means steam is conducted to theopposite side ol the intermediate motor, and it ell'ects the loweringot' the stem b o1" the valve B until the main motor is brought to anormal speed.

Although l have particularly described the construction ot' thesteanrian employed as the independent intermediate motor in thisinstance, l do not wish to he nmlerstood as limiting my invention inother respects to the use of a motor having such described.construction; but l may substitute therefor a ireciproeative steam orelect-rie motor, or any suitable devices adapted te be operated by steamor electricity, the gist ol' this particular feature ol" my inventionbeing the use of an independently supplied and operative steammotor.lio, also, l may lvary the details el" construction in the means l'orconnecting the \solenoid to an intermediate independentsteam motor andto the main motor, and. in all respects, so 'far as details ofconstruction are concerned, l may vary them to any extent and to anymanner within the skill ol' persons conversant in the construetioiir ol'electrical and steam operated mechanisms.

llaving described my invention and its operation, whatl claim. as new,and desire to secure by l'ietters Patent, isi--n ll.. rlhe combination.ol" a main and a second ary steanrmotor, the latter provided with acontrolli11g-valve connu-sing a cylinder, an upper and a. lower oppositeport, and a piston arranged to cover either or both ot said ports, withan indepemlent supplypipe for each motor, and with a solenoid directlyconnected to said valve of the secondarymotor, and electricallyconnected With a dynamo driven by Jthe main motor, the secondary motorbeing adapted to control the steam supplied to the main motor,substantially as speciiied.

2. In an apparatus comprising a main motor, a dynamo operated thereby, asolenoid in circuit with said dynamo, and a secondary motor, thecombination, with said solenoid and with said secondary motor, of asupplyvalve comprising a chest or valve body having opposite ports indifferent planes, and a valve or piston head adapted to cover either orboth of said ports, substantially as shown and described.

3. 'Ihe combination of a main steam-motor, an independent rotarysteam-motor provided with oppositely-located ports, and a valve havingseparate connections with each of said ports, with a solenoid connectedwith said valve and With the Valve of the main motor, substantially asspecied.

et. The combination of a governing-valve of a steam-motor, the stem ofwhich is screwthreaded and provided with a nut, With anindependently-supplied steam-motor, a suitably-connected solenoid, andmechanism for rotating said nut in opposite directions, as specified.

5. The combination of the valve B', stem b,

gears b5 b', and motor E, with the solenoid D,

substantially as shown and described.

(i. rlhe combination ofthe valve B', stem b, guide b', bracket b3, nutIIL, gear b5, and collar b, with an electrically-governed motor,substantially as shown and described.

7. The combination ofthe valve B', standard B", and motor E, andsolenoid D, supported on the standard, substantially as shown anddescribed.

8. rIhe combination of the valve B', standard B", motor E, and solenoidD, substantially as shown and described.

9. The combination oi the motor E, pipes e7 e F', valve F, and solenoidD, substantially as shown and described.

10. The combination of the motor E, having ports e' e3, valve F, havingports es e", pipe F', piston f, and solenoid D, substantially as shownand described.

11. The combination of the valve F, piston f, elastic stem f', lever G,and solenoid D,

substantially as shown and described.

12. The combination of the valve F, stem f', lever G, bracket g, coreD', spring g2, and a bolt provided With adjusting-:nuts f/ g2,substantially as shown and described. c

In Witness whereof I have hereunto subscribed my name.

EDWARD I-I. AMET.

Vitnesses: l

WILLIAM J. DoNLIN, FREDERICK S. BAKER.

